Device for applying pressure.



W. S. DUWELIUS.` DEVICE FOR APPLYING PRESSURE.

APPLICATION FILED DCT.12, 1914.

Ptented Aug. 8, 1915 ATTORNEYS WALTER S. DUWEL''S, OF CINCINNATI, OHIO.

DEVICE FR AEPLYING PRESSUE.

T all whom it may concern Be it known that I, WALTER S. DUwELiUs,

* a citizen of the United States, residing at Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Devices for Applying Pressure; and l do hereby declare the following to be a iull, clear, and exact description of the invention, such as will enable others` skilled in the art to which it appertains to make and use the same.

rlhis invention relates to devices for applying pressure and is adapted for use in connection with various forms of clamping devices, such as vises, chucks, qcfins and the like. The invention is directed to the provision of a pressurefapplying device so constructed that it will adapt itself automatically for equalization or for a desired distribution of pressure along the length of the device.

While my invention is adapted for use in connection with clamping devices varying widely in their construction and in the relations in which they are used, it isof special utility in connection with printing apparatus eithe as a quoin or as a spacing member used in combination with a quoin to lock a form of type in a chase.

The invention involves the provision ofv a pressare-applying device having a plurality of contact members distributed along the length of the device and means for causing' a differential, lateral movement of these contact members whereby they'will be brought to bear upon a coactii'ig surface with equal pressure or with ]v)i'essure varying in a predetermined degree.l 5. i A' y ln accordance with ythe .p 4fer-red embodiment of theinvention, thefpressure device consists of a frame having a plurality of contact members therein, each of which presents a curved surface, these members being adapted to Abemoved laterally so that some or ally of .-tliein Iare projected more or less from the side'of the frame into engagement with the coating ,.surface. l/Vhen con'- 'structed in .the form of a quoin, the frame is preferably of tubular form, rectangular in cross-section and having one side or two oppositesides cut away to permitofprojecting the contact members located within the frame through the sides of the frame.

The contact members are preferably iny the forni of balls or rollers of such size and numberthat'wlien they are in substantial Specification of Letters Patent.

Patented Aug. 3, 1915.

Application filed October 12, 1914. Serial No. 866,299.

alinement lengthwise of the device, they eX- tend practically from one end to the other thereof.

At one or both ends of the device, means are provided for subjecting the contact members to pressure in the direction of the length of the device so as to cause them, or certain of them, to be projected laterally through an open side of the device into contact with a surface extending substantially parallel to the device.

With this form of pressure-applying device, the several Contact members will. move outwardly to such extent as is necessary to cause them to engage the co-acting surface whether the latter be exactly parallel to the pressure-applying device or not. This characteristic makes the device of special value as a quoin or piece of furniture for use in connection with a chase which has become slightly sprung. Also, the several contact members may be caused to move so as to equalize the pressure thereof upon the coacting surface. But if it be desired that the pressure of the several contact members be distributed unequally, this may be readily accomplished by.nierely varying` A tion of the device; Fig. i is a fview similar to` Fig. l illustrating a slight modification and showing. the/device employed as a quoin; Fig. 5 isy view similar to Fig. l illustrati? ing a further modification and Fie'. (i is a transverse section of the device shown in Fig. 5.

Referring to these drawings, the device consists of a tubular frame or casing k7 of i rectangular cross-section. On one side, "this casing is cut away, the cut-away portionbe-m ing of such width as to leave flanges 8l pro- -jecting ytoward/each other and serving as a retaining mea/ns for the nontact members, These contact members are provided with coacting, curved surfaces; they may be in the form of rollers, balls, ovals or other form as desired. n the present instance, cylindrical contact members in the form of rollers 9 and 10 are shown. rlhe rollers 10 are oi such size that they are at all times retained within the casing 7 ,these rollers being of greater height than the distance between the flanges 8. The rollers 9, however,k

are of less height and can be projected."A

between the flanges. 8.

through the space.

.These rollers 9 have axially disposed pins A casing/. This consists of a screw 12 threaded into an opening in the end of the casing 7 and having a polygonal head oui-.sidev the casing. The end of the screw 12 engages a hearing block 13 provided .with a curved face to coac't with the `4end roller 10.

With this form of pressure-applying (ievice, the screw 12 may be screwed up so as to subject the rollers 9 and 10 to pressure in the direction fof the length of the ldevice and thus cause the alternate rollers 9-to be projected laterally through the opening in the side of the casing 7 as shown in Fig. 1. The contact members 9 will thus be caused to move laterally into engagement with a coacting surface andto engage that surface with the desired degree of pressure.

If that surface be parallel to the device, all of the rollers 9 will be projected laterally the same amount and will exert equal pressure upon the surface. Ifthe 'surface be out of parallelisrn with the device, certain of the contact members 9 will move laterally to a greater extent than others, and if all of them b e of the same'vdiameter as shown in Fig. 1, they will exert substantially equal pressure upon' the surface.

In Fig. Ll, the device is shown as a quoin employed in a chase 14 for locking a form of type 15 therein. ln this figure, the chase 14 is shown as having one side slightly sprung so thatl the inner wall of. that side is not exactly parallel to the quoin. Because of this, certain of the contact members 9 'are shown as having been projected laterally to a greater extent than others to compensa for the variation in the distance between the quoin and the wall of the chase at different points along the length of the quoin.

of the contact mem- Also, in Fig. 4:, certain vThese contact members of greater others.

subjected to lateral presdiameter will be in that the `rection of the greater diameter than' throughout the length ofthe device, the provision of such contact members 9 differing in diameter serves to distribute the pressure unequally Ain the desired manner.

' ln-Figey 5, va construction is shown (lidering from that illustrated in the other figures on opposite sides and all, or practically all,

of the rollers are arranged for lateral movement, some of: them being projected on one side of tliecasing and the others on the opposite side. All of the rollers 16, except the one 17, at the end of the series, are of such height that they will pass between the iianges 8 of the cut-away sides of the casing 7, and t vley are provided with axial pins 1l which coact with the flanges 8 as retainers. When pressure is applied to the series oi rollers by means of the screw 12, alternate rollers 16 will be projected on one side and the .others on the opposite side of the device into contact with the elements lying Yon opposite sides of the casing.

located at casing ot' the device is cut away I pruefer to use two ioo members which are oblong with semi-circuy[ lar engaging surfaces What I claim is:I 1. A device for applying pressure comprising a hollow frame-member slotted lengthwise thereof, a plurality ofcontacting devices arranged in line within the frame-member, and Ameans operable from outside the frame-member for moving the contacting devices in the direction of the length of the frame-member, said devices being so shaped that when moved in the diat their ends.

certain, of them .are caused; to project through said slotted opening in the framemember; substantially as described.

2. A device for applying pressure comprising a hollow frame-member of rectangufk. lar cross-section closed at its ends and slotted lengthwise of the member along one side, a yplurality of contacting devices arranged and a threaded member'operable from the exterior of the frame-member to cause movement of said devices lengthwise of the frame-member, said contacting devices belength of the frame-member, y

'125 i inline within the frame-member,N

ing so shaped that'when they are so moved, certain of them are caused to project through said slotted opening in the framemember; substantially as described.

3. A device for applying pressure comprising a hollow fume-member slotted lengthwise thereof, a plurality of contacting devices arranged in line within the and means for limiting the movement of the contacting devices through said opening; substantially as described.V

l. A device for applying pressure comprising a hollow frame-member of rectangular cross-section closed at its ends and having a slotted opening extending lengthwise of the member in one of the sides of theA member, which opening is of less width than the width of the space within the hollow frame-member, a plurality-of contacting devices arranged in line withinthe framemember, and a threaded member operable from the exterior ot the frame-member to cause movement of said devices lengthwise of the frame-member, said contacting devices being so formed that when they arev so moved, certain of them are projected partially but not entirely through thesaid slotted opening in the frame-member; substantiallfy7 as' described.

5. A device for applying pressure comprising a casing of rectangular cross-section open along one side and having retaining flanges at said open side, a plurality of movable members lyingv within the casing and disposed in substantial alinement lengthwise thereof, and a screw operable from outside the casing ior subjecting said members i5 to pressure lengthwise of tne casing,` said members being so formed that when they are subjected to pressure by the screw, certain of them are moved laterally to cause them to project through the opening in the side of the casing; substantially as descriped.

6. A device for applying pressure comprising a casing of rectangular cross-section having lengthwise openings in opposite sides thereof, a plurality of movable members lying within `the casing and disposed in substantial alinementlengthwise thereof, and a screw operable from outside the casing for 'subjecting said members to pressure in the direction of the length of the casing, said members being so shaped that when subjected to pressure by the screw, they are moved laterally so that some of them are projected through the opening in one side of the casing and some ot' them through the opening in the opposite side; substantially as described.

7. A device tor applying pressure comprising a casing of rectangular cross-section having a lengthwise opening in one side thereof, a plurality otmovable members within the casing of circular form and of dill'erent diameters and a screw operable. from outside the casing for subjecting the Y members to pressure lengthwise ot' the casing whereby certain of the members are moved-laterally into positions in which they project through the open side of the casing; substantially as described.

ln testimony whereoil l allix my signature, in presence of two witnesses.

lVALTER S. DU'WELUS.

`Witnesses W. T. PERRY, JoHN J. Krisen. 

